please dont spam, Aldready reported a account who spamed for 50 points.all the questions for 40 points
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2
Answer:
in the first question you need to rationalise it and then solve it till the answer is in the form of a+b√3.
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5
Answer:
x³+y³+15xy-125
=x³ + y³ +3 xy ×5 - 125
=x³ + y³ +3xy(x+y) - (5)³
= (x+y) ³ - (5)³
=(5)³ - (5)³
=0...(ans)
Hope this is ur required answer.
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